Purchase and installation costs of some equipment are given as weight function rather than capacity. An example of this is the purchase and installation costs of large tanks. 1980 purchase and installation costs for an aluminum tank weighing 100,000 lb are $ 390,000. For a size of 200,000 to 1,000,000 lbs, the installed cost-weight base for aluminum tanks is 0.93. If an aluminum tank weighing 700,000 lb is required, what is its cost in 2002?